Accession Number : AD0785135

Title :   Speaker Verification.

Descriptive Note : Final technical rept. Mar 72-Apr 74,

Corporate Author : TEXAS INSTRUMENTS INC DALLAS EQUIPMENT GROUP

Personal Author(s) : Doddington,George R.

Report Date : JUL 1974

Pagination or Media Count : 114

Abstract : A practical method of automatic speaker verification is developed, based on amplitude spectrum. Precise time registration receives primary emphasis. Verification is based on the similarity of six spectral/time matrices located with a test phrase with corresponding matrices defined during training. Each matrix is 0.1 second long and is precisely located by scanning the test phrase for a best match with the reference matrix. Reject rate for known speakers was plotted versus session number, at a nominal reject rate of 10 percent. Initial and final reject rates of 5 percent and 15 percent, respectively, indicate the necessity of adaptation in a practical system. (Modified author abstract)

Descriptors :   *Speech, *Pattern recognition, Identification systems, Noise(Sound), Performance(Human), Words(Language), Intelligibility

Subject Categories : Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE